Kohaku shows Senku to her village, but it's going to take some convincing before they let him in. In the meantime, he makes friends with a like-minded, promising "sorcerer."

While Senku's diversion buys Gen and others some time, soon Homura realizes something is not right.

The final touches to the automobile are made and it is used to transport the science supplies to a fortified cliffside that's close to the Tsukasa empire. From there the automobile is upgraded into a tank, but unbeknownst to the rescue group preparations by the empire have been made to counter any vehicular attack.

Senku demands a truce from Tsukasa in return for reviving his sister, Mirai, who Tsukasa comes to know is alive, but a new problem shows up when Hyoga shows his true self.